Armor AR350 vs Ghostshield Siloxa-Tek 8500: Wet-Look vs Penetrating
By The DIYPicks Team · Updated July 2026
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Armor AR350 Wet Look Acrylic Concrete Sealer
A pro-grade solvent acrylic that gives concrete driveways and pavers a low-gloss wet look while adding a protective surface film. It dramatically enhances color, but as a topical coating it can get slick when wet and needs recoating every few years.
| type | Solvent-based acrylic (film-forming, 25% solids) |
|---|---|
| surface | Concrete and pavers |
| finish | Wet look, low gloss |
| coverage | 175 sq ft/gal porous, 200-225 sq ft/gal smooth, per coat |
| coats | 2 coats recommended |
| cureTime | Dry 4-6 hr; recoat 24 hr; foot traffic 24 hr; wheel traffic 24-48 hr |
| durability | 2-5 years before recoat |
| properties | Non-yellowing, breathable, UV resistant |
Ghostshield Siloxa-Tek 8500 Penetrating Concrete Sealer
A DOT-approved water-based silane/siloxane that soaks into concrete to form an invisible water and salt repellent barrier. It is the go-to for freeze-thaw and road-salt protection without any slippery film, but it adds zero visual enhancement.
| type | Water-based silane/siloxane penetrating sealer (DOT approved) |
|---|---|
| surface | Concrete, brick, masonry, pavers |
| finish | Natural, no gloss (invisible) |
| coverage | Up to 250 sq ft/gal per coat (ready-to-use) |
| protection | Repels water and deicing salt/chloride; reduces freeze-thaw damage |
| application | Low-pressure sprayer, roller, or brush |
| slipRisk | Does not change surface traction |
| durability | Long-lasting sub-surface barrier |
Our verdict
These represent the two opposite philosophies of concrete sealing. Armor AR350 is a film-forming acrylic that darkens the surface with a low-gloss wet look and adds stain protection, but it can get slippery when wet and needs recoating every 2-5 years. Ghostshield Siloxa-Tek 8500 is a penetrating silane/siloxane that soaks in for invisible, non-slip water and salt repellency lasting far longer, but it does nothing for appearance. Choose AR350 if you want to enhance how the concrete looks; choose the 8500 if you want maximum durable protection in a salt or freeze-thaw climate with no change to the surface.